|Frank R. Walker Company|
Construction cost estimating reference books, journal, software tools and resources for building and design professionals. Safety, measuring and calculation instruments and other products for constructors
One of the leaders in scientific publications including books, journals, and dictionaries in the fields of agriculture/biology, arts/humanities, chemistry, computer science, economics, engineering, life sciences, mathematics, physics, medicine and more.
Monthly ezine featuring articles on atmospheric situations of interest, and science fair topics.